61421184 has 192 divisors, whose sum is σ = 199536480. Its totient is φ = 17971200.

The previous prime is 61421179. The next prime is 61421197. The reversal of 61421184 is 48112416.

It is a happy number.

61421184 is a `hidden beast` number, since 61 + 421 + 184 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468799 + ... + 468929.

Almost surely, 2^61421184 is an apocalyptic number.

61421184 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61421184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99768240).

61421184 is an abundant number, since it is smaller than the sum of its proper divisors (138115296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61421184 is a wasteful number, since it uses less digits than its factorization.

61421184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 184 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 61421184 is about 7837.1668350240. The cubic root of 61421184 is about 394.5536463162.

The spelling of 61421184 in words is "sixty-one million, four hundred twenty-one thousand, one hundred eighty-four".